Answer:
1. steady beat (bass drum for example) is consistent, (playing the same thing over and over) while a beat is more in depth about what is taping.
2. in the lines it shows boarder like lines that have(if its 4/4) note, note, note, note | note, note, note(all quarter notes) while 3/4 is, note, note, note | note, note, note etc. (again quarter notes); and one way to keep beat (or maintain) is my taping your foot.
3. the quarter is note has a one count. (tapX1)
4. its the quality of sound and can state if your group sounds good and can determine if they are together.
5. a half step cuts out after 2 held notes and a whole cuts out after the measure(4 notes if its 4/4, 3 if its 3/4 [I think]).
1.1. its soft and reassuring. (?)
2.1.to have a better understanding.
3.1. if it is not, the piece will be uneven, unsteady, and inconsistent
4.4.so you can hear the difference and it does not sound like musicians are playing offbeat.
Thank you for your time -kingsman